我地防治黄瓜霜霉病过去大都用甲霜灵，但近两年发现许多地区的黄瓜霜霉病菌对甲霜灵产生了抗药性、为此，我们引进了杜邦克露72％可湿性粉剂及50％甲霜铝铜，通过防病试验，新引进的两种农药，对黄瓜霜霉病防效突出，值得推广。三材料与方法1.1供试药剂①72％杜邦克露可湿性粉 My control of cucumber downy mildew mostly used metalaxyl, but in recent years found in many areas of cucumber downy mildew resistance to metalaxyl resistance, therefore, we have introduced 72% of DuPont Kelu WP and 50% melatonin aluminum and copper, through the anti-disease test, the introduction of two new pesticides, cucumber downy mildew prevention effect is outstanding, it is worth promoting. Three materials and methods 1.1 for the test agent ① 72% DuPont Ke Lu wettable powder